Make field not required with code

Hi. I’ve got Last name required on my Checkout page http://prntscr.com/nd57lb
I want to change this and make NOT required if virtual products are in cart.

add_filter( 'woocommerce_checkout_fields', 'woo_simplify_checkout_virtual' );
function woo_simplify_checkout_virtual( $fields ) {
     
    $only_virtual = true;
     
    foreach( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
        // Check if there are non-virtual products
        if ( ! $cart_item['data']->is_virtual() ) $only_virtual = false; 
    }
     
    if( $only_virtual ) {
        // WHAT SHOULD I PLACE HERE?
    return $fields;
}

I’m trying to unset Lat Name with

$fields['billing_last_name']['required'] = false;

but it doesn’t work.

What code should I use to unset required field with code?
Thanks.

• This topic was modified 6 years, 11 months ago by ADvi.
• This topic was modified 6 years, 11 months ago by ADvi.